diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index a59418b46..f07438691 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -523,8 +523,8 @@ jobs:
         echo "CXXCOMPILER=clang++" >> $GITHUB_ENV
         sudo apt-get update -y && sudo apt-get install clang++-6
         
-        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-6.0 100
-        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-6.0 100
+        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-6.0 1
+        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-6.0 1
 
         # we only enable lto for release builds
         # and therefore don't need to us ld.gold or llvm tools for linking